基于环境小卫星CCD影像的水体提取指数法比较

论文摘要

针对湖北省大东湖水网水环境遥感监测需求,开展基于环境小卫星CCD影像的内陆湖库水体提取指数方法研究。以常见的3种水体识别指数为模型,参照使用TM、MODIS等典型传感器进行水体提取的波段选择方式,通过对环境小卫星CCD影像4个波段地物光谱信息的变化趋势分析,发现各波段对水体目标的区分能力;使用指数模型和相应阈值分别计算获得水体特征图像,并以目视判读结合精度评价指标的方式对提取结果进行对比分析。实验结果表明,归一化差异综合水体指数的目视判别效果最好,且具有水陆区分度高和误识别率低的特点,适用于解决水体目标快速提取问题。
Based on CCD images captured from HJ satellite,this paper presents a comparison and research on capabilities of different indices in extracting inland lakes′ water,relating to the requirement of water environmental monitoring by remote sensing technique for East Lakes in Hubei Province.Referring to optimal bands used for water extraction from typical sensors,such as TM and MODIS,images from HJ satellite were utilized as data source to analyze and assess its availability on water extraction.Radia...

下载地址

http://www.gissky.net- GIS空间站